CVE-2009-1122 EXPLOIT
7.5
HIGH · CVSS 2.0 · EPSS 98.4% (pctl 100)
Patch early
A public exploit exists.
Description
The WebDAV extension in Microsoft Internet Information Services (IIS) 5.0 on Windows 2000 SP4 does not properly decode URLs, which allows remote attackers to bypass authentication, and possibly read or create files, via a crafted HTTP request, aka "IIS 5.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1535.
Scoring
| CVSS | 7.5 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 98.45% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-287 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-06-10 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | internet information services |
| microsoft | windows 2000 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (2) | 2009-05-26 |
References
- http://www.attrition.org/pipermail/vim/2009-June/002192.html
- http://www.securityfocus.com/bid/35232
- http://www.securitytracker.com/id?1022358
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.vupen.com/english/advisories/2009/1539
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5861
- http://www.attrition.org/pipermail/vim/2009-June/002192.html
- http://www.securityfocus.com/bid/35232
- http://www.securitytracker.com/id?1022358
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.vupen.com/english/advisories/2009/1539
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5861
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